S115012 DLC膜衝突摩耗痕断面の観察([S11501]トライボロジーの基礎と応用(1))

概要

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Recently, DLC (Diamond-Like carbon) is one of the candidate for machine parts of its high hardness, low friction and high wear resistance. It contains both sp2 and sp3 bonding and generally some hydrogen. DLC is used for industrial products, for example hard disk drives, bearings and cutting tools. In order to clarify the impact wear mechanism, we focused on observation of Cross-sectional images in this paper. DLC coated disk was impacted by the chromium molybdenum steel (SCM) pin at several different impact loads, impact angles and impact cycles under lubrication condition. We observed cross section of DLC after impact wear experiment. In the case of pin impacted DLC vertically, we observed radial crack from interface and some wavy lines with increasing impact load. The impact load was more increased, we observed radial crack and lateral crack in DLC. Next in the case of occurrence of microslip, there were some wavy lines on cross section of DLC at impact angle=45° and 60° It means that the tensile load is related with the formation of wavy lines because there were no wavy lines on cross section of DLC at impact angle=90°
一般社団法人日本機械学会の論文
2011-09-11